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  Irrigation in the Earth system

McDermid, S., Nocco, M., Lawston-Parker, P., Keune, J., Pokhrel, Y., Jain, M., Jägermeyr, J., Brocca, L., Massari, C., Jones, A. D., Vahmani, P., Thiery, W., Yao, Y., Bell, A., Chen, L., Dorigo, W., Hanasaki, N., Jasechko, S., Lo, M.-H., Mahmood, R., Mishra, V., Mueller, N. D., Niyogi, D., Rabin, S. S., Sloat, L., Wada, Y., Zappa, L., Chen, F., Cook, B. I., Kim, H., Lombardozzi, D., Polcher, J., Ryu, D., Santanello, J., Satoh, Y., Seneviratne, S., Singh, D., Yokohata, T. (2023): Irrigation in the Earth system. - Nature Reviews Earth & Environment, 4, 435-453.
https://doi.org/10.1038/s43017-023-00438-5

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McDermid, Sonali1, Author
Nocco, Mallika1, Author
Lawston-Parker, Patricia1, Author
Keune, Jessica1, Author
Pokhrel, Yadu1, Author
Jain, Meha1, Author
Jägermeyr, Jonas2, Author              
Brocca, Luca1, Author
Massari, Christian1, Author
Jones, Andrew D.1, Author
Vahmani, Pouya1, Author
Thiery, Wim1, Author
Yao, Yi1, Author
Bell, Andrew1, Author
Chen, Liang1, Author
Dorigo, Wouter1, Author
Hanasaki, Naota1, Author
Jasechko, Scott1, Author
Lo, Min-Hui1, Author
Mahmood, Rezaul1, Author
Mishra, Vimal1, AuthorMueller, Nathaniel D.1, AuthorNiyogi, Dev1, AuthorRabin, Sam S.1, AuthorSloat, Lindsey1, AuthorWada, Yoshihide1, AuthorZappa, Luca1, AuthorChen, Fei1, AuthorCook, Benjamin I.1, AuthorKim, Hyungjun1, AuthorLombardozzi, Danica1, AuthorPolcher, Jan1, AuthorRyu, Dongryeol1, AuthorSantanello, Joe1, AuthorSatoh, Yusuke1, AuthorSeneviratne, Sonia1, AuthorSingh, Deepti1, AuthorYokohata, Tokuta1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: Irrigation accounts for ~70% of global freshwater withdrawals and ~90% of consumptive water use, driving myriad Earth system impacts. In this Review, we summarize how irrigation currently impacts key components of the Earth system. Estimates suggest that more than 3.6 million km2 of currently irrigated land, with hot spots in the intensively cultivated US High Plains, California Central Valley, Indo-Gangetic Basin and northern China. Process-based models estimate that ~2,700 ± 540 km3 irrigation water is withdrawn globally each year, broadly consistent with country-reported values despite these estimates embedding substantial uncertainties. Expansive irrigation has modified surface energy balance and biogeochemical cycling. A shift from sensible to latent heat fluxes, and resulting land–atmosphere feedbacks, generally reduce regional growing season surface temperatures by ~1–3 °C. Irrigation can ameliorate temperature extremes in some regions, but conversely exacerbates moist heat stress. Modelled precipitation responses are more varied, with some intensive cropping regions exhibiting suppressed local precipitation but enhanced precipitation downstream owing to atmospheric circulation interactions. Additionally, irrigation could enhance cropland carbon uptake; however, it can also contribute to elevated methane fluxes in rice systems and mobilize nitrogen loading to groundwater. Cross-disciplinary, integrative research efforts can help advance understanding of these irrigation–Earth system interactions, and identify and reduce uncertainties, biases and limitations.

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Language(s): eng - English
 Dates: 2023-04-242023-06-202023-07
 Publication Status: Finally published
 Pages: 19
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s43017-023-00438-5
Organisational keyword: RD2 - Climate Resilience
PIKDOMAIN: RD2 - Climate Resilience
Working Group: Land Use and Resilience
MDB-ID: No data to archive
Regional keyword: Global
Research topic keyword: Food & Agriculture
Research topic keyword: Freshwater
Research topic keyword: Land use
 Degree: -

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Title: Nature Reviews Earth & Environment
Source Genre: Journal, SCI, Scopus
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Publ. Info: -
Pages: - Volume / Issue: 4 Sequence Number: - Start / End Page: 435 - 453 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/nature-reviews-earth-environment
Publisher: Nature